add license checker GH action

[gdams]

I've written a handy shell script to set the copyright dates correctly based on git commit history:

#!/bin/bash

# Directory containing the files to be checked
DIRECTORY="$PWD"

# Loop through all files in the specified directory
find "$DIRECTORY" -type f | while read -r file; do
    # Check if the specific line exists in the file
    if grep -q "Copyright (c) 2024 Contributors to the Eclipse Foundation" "$file"; then
        echo "Found in file: $file"
        
        # Find the original commit date of the file
        original_date=$(git log --format=%aD "$file" | tail -1)
        
        # Extract the year from the original commit date
        original_year=$(date -d "$original_date" "+%Y" 2>/dev/null) || original_year=$(date -jf "%a %b %d %T %Y %z" "$original_date" "+%Y")
        
        # Replace "2024" with the original year in the file
        sed -i "" "s/2024/$original_year/g" "$file"
        
        echo "Updated to: Copyright (c) $original_year Contributors to the Eclipse Foundation"
    fi
done

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[tellison]

The copyright notice is incorrect.

[tellison]

1. Is it possible split out the license eye action (license-eye) and configuration (licenserc) into a shareable location (propose adoptium/.github/workflows)?

2. The copyright of contributions does not belong to the Eclipse Foundation, so the headers in this PR are incorrect. If we don't know the specific contributors it should be a generic statement as advised in the developer handbook, with an update to the notice file.

Copyright (c) {year} Contributors to the Eclipse Foundation

3. Might as well add an SPDX and other configuration options too since it is automated. I propose we don't use the contributors optional section of headers.

[github-actions]

A block has been put on this Pull Request as this repository is temporarily under a code freeze due to an ongoing release cycle.

If this pull request needs to be merged during the release cycle then please comment /merge and a PMC member will be able to remove the block.

If the code freeze is over you can remove this block by commenting /thaw.

[tellison]

Just a couple of items to fix, remove the copyright claim from third-party public keys, and update the tool ignore list for them.
Good to see the dates on the copyright being fixed up!

[gdams]

Just a couple of items to fix, remove the copyright claim from third-party public keys, and update the tool ignore list for them. Good to see the dates on the copyright being fixed up!

@tellison updated PTAL